SAMD21 Cortex-M0+ Mini Dev Board 48MHz 32KB RAM – Arduino Zero

SAMD21 M0-Mini 32-Bit Development Board – Arduino Zero Compatible

Take your microcontroller projects to the next level with the SAMD21 Cortex-M0+ Mini Development Board. This compact, high-performance 32-bit board is fully compatible with Arduino Zero and Arduino M0, delivering the power of the SAMD21 processor in a small form factor comparable to the Arduino Micro or Nano. Whether you're an experienced maker or just getting started with 32-bit development, this board is an ideal foundation for your next build.

Key Features

• 32-Bit ARM Cortex-M0+ Processor – Atmel SAMD21 running at 48MHz for fast, efficient computation
• 32KB SRAM / 256KB Flash – Ample memory for complex firmware and IoT applications
• Arduino Zero & M0 Compatible – Use the full Arduino IDE ecosystem with M0-compatible libraries
• EDBG (Embedded Debugger) – Full on-chip debug interface built in, no extra hardware needed; also supports a virtual COM port for device and bootloader programming
• Compact Mini Form Factor – Approximately the same footprint as an Arduino Micro/Nano, perfect for space-constrained projects
• SMD Package – Professional-grade surface-mount design for reliability
• Pin Headers Un-Soldered – Allows flexible configuration to suit your specific build
• Wide Application Range – Ideal for smart IoT devices, wearable tech, automation systems, robotics, and educational projects

Specifications

What's in the Box

• 1 × SAMD21 M0 Mini ARM Cortex-M0+ 32-Bit Development Board (USB, Arduino Zero / M0 Compatible)

Great for Makers & Electronics Enthusiasts

The SAMD21 M0-Mini is a fantastic step up from 8-bit boards, offering the expanded performance needed for more demanding projects — all while remaining plug-and-play within the familiar Arduino environment. From smart home automation to wearable gadgets and educational robotics, this board handles it all with ease.

Pair it with other components from our store to build complete projects:

• Round Aluminum Wire 1mm–3mm | DIY Jewelry Making Wire – great for wearable tech enclosures and prototyping
• Glow in the Dark Natural Stone Round Beads | DIY Jewelry Making – add creative flair to wearable or IoT project enclosures

Learn more: OSHA on eye and face protection

Frequently Asked Questions

Q: What is the SAMD21 Cortex-M0+ Mini Dev Board and what can I use it for?

A: The SAMD21 Cortex-M0+ Mini Dev Board is a compact 32-bit microcontroller development board based on the Atmel SAMD21G18 chip running at 48MHz with 32KB RAM and 256KB Flash. It is fully compatible with the Arduino Zero and Arduino M0 platforms, making it suitable for smart IoT devices, wearable technology, robotics, home automation systems, and 32-bit educational projects.

Q: Is the SAMD21 M0-Mini compatible with the Arduino IDE?

A: Yes! The SAMD21 M0-Mini is fully compatible with the Arduino IDE and supports all M0-compatible libraries. Simply install the Arduino SAMD board support package in the IDE, select the appropriate board, and you're ready to upload your sketches just like you would with any Arduino board.

Q: Does the SAMD21 Mini board come with pin headers pre-soldered?

A: No — pin headers are included but un-soldered. This gives you the flexibility to configure the board exactly as your project requires, whether you want straight headers, right-angle headers, or no headers at all for direct soldering into a PCB.

Q: What debugging capabilities does this board have?

A: The SAMD21 M0-Mini features an on-board EDBG (Embedded Debugger) interface, providing a full hardware debug experience without the need for any additional debug tools. It also exposes a virtual COM port for device programming and bootloader flashing via USB.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.